Recovering waste for construction: a significant advance in Benin

The thesis by Gbènondé Sèna Gladys Milohin, defended at the Université de Lorraine, reveals that a dosage of 5% wood ash and 20% crushed glass in the manufacture of fired clay bricks improves their flexural tensile strength while maintaining other essential properties. This research, carried out in 2019, proposes a sustainable solution for the construction sector in Benin.

Waste recovery has become crucial in Benin, where clay, although widely available, is often underutilized. The research by Gbènondé Sèna Gladys Milohin, conducted under joint supervision with the Université d'Abomey-Calavi, explores how to incorporate waste such as glass bottles and wood ash into brick production, addressing both waste management and construction material needs.

Experimental results show that adding 5% wood ash and 20% crushed glass significantly improves the flexural tensile strength of the bricks. These innovations not only maintain compressive strength but also optimize the thermal properties of the bricks, paving the way for a sustainable alternative in the construction sector.

For decision-makers, this research underscores the importance of incorporating recycled materials into brick production, which could boost the local economy and create jobs. It is recommended that market players be made aware of these new practices and that partnerships be developed to encourage the adoption of eco-friendly construction solutions.

« "Incorporating 5% wood ash and 20% crushed glass into brick manufacturing improved their flexural tensile strength while preserving other essential properties." »

« "This research highlights access to sustainable solutions for the construction sector in Benin, offering opportunities for decision-makers and investors." »